Water processor

Abstract

A water processor, comprising a flow measurement circuit. The flow measurement circuit comprises an external power supply end, an external signal end, a control chip, a Hall element, and a capacitor auxiliary unit, wherein a signal output end of the Hall element is connected to a signal input end of the control chip, and a signal output end of the control chip is connected to the external signal end; and two ends of the capacitor auxiliary unit are respectively connected to a positive electrode and a negative electrode of the Hall element, and the positive electrode of the Hall element and a power supply end of the control chip are both connected to the external power supply end. Thus, using the Hall element for measurement can ensure the reliability; a signal of the Hall element can be processed by means of the control chip and then outputted in a specific form, thereby ensuring the adaptability to an external circuit; and the capacitor auxiliary unit can ensure the power supply of the Hall element, thereby further improving the corresponding reliability.

Description

A water processor

[0001] This application claims priority to Chinese Patent Application No. 202423155506.8, filed on December 20, 2024, entitled "A Water Processor", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of household appliance technology, and in particular to a water processor for a dishwasher, which may be, for example, a respirator, a water softener, etc. Background Technology

[0003] In related technologies, magnetic elements are installed on the impeller of a respirator or water softener, and a detection circuit is arranged near the impeller. The detection circuit contains a magnetic reed. As the impeller rotates, the magnetic field strength of the magnetic reed changes, causing the magnetic reed to switch between open and closed states. This constant switching of the magnetic reed between open and closed states is converted into pulse signals, which the detection circuit uses to calculate the corresponding flow rate. However, the magnetic reed is a mechanical switch, and after long-term use, it will experience mechanical wear and fatigue, resulting in reduced reliability. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the following technical solutions are provided:

[0005] A water processor, which is a breather or a water softener, includes a flow detection circuit. The flow detection circuit includes an external power supply terminal, an external signal terminal, a control chip, a Hall element, and a capacitor auxiliary unit. The signal output terminal of the Hall element is connected to the signal input terminal of the control chip, and the signal output terminal of the control chip is connected to the external signal terminal.

[0006] The two ends of the capacitor auxiliary unit are respectively connected to the positive and negative terminals of the Hall element, and the positive terminal of the Hall element and the power supply terminal of the control chip are both connected to the external power supply terminal.

[0007] The flow detection circuit has a first working state and a second working state. In the first working state, the signal output terminal of the Hall element outputs a first signal to the signal input terminal of the control chip, the signal output terminal of the control chip outputs a high level to the external signal terminal, and the capacitor auxiliary unit supplies power to the Hall element and the control chip.

[0008] In the second operating state, the signal output terminal of the Hall element outputs a second signal to the signal input terminal of the control chip, the signal output terminal of the control chip outputs a low level to the external signal terminal, and the external power supply terminal supplies power to the Hall element and the control chip.

[0009] In this way, using Hall element detection can ensure reliability; the signal output terminal of the Hall element is connected to the signal input terminal of the control chip, and the signal output terminal of the control chip is connected to the external signal terminal. In this way, the control chip can process the signal of the Hall element and output it in a specific form, thereby ensuring compatibility with external circuits; while the capacitor auxiliary unit can ensure the power supply of the Hall element, further improving the corresponding reliability. Attached Figure Description

[0010] Figure 1 is a perspective view of one embodiment of the water processor in this application;

[0011] Figure 2 is an enlarged schematic diagram of region A in Figure 1;

[0012] Figure 3 is a schematic diagram of the explosion in the water treatment process shown in Figure 1;

[0013] Figure 4 is an enlarged schematic diagram of region B in Figure 3;

[0014] Figure 5 is a three-dimensional schematic diagram of the circuit board, the third housing, and the impeller in Figure 4;

[0015] Figure 6 is a cross-sectional schematic diagram of the water processor in Figure 1;

[0016] Figure 7 is a circuit diagram of one embodiment of the flow detection circuit in this application;

[0017] Figure 8 is a perspective view of one embodiment of the flow detection component in this application;

[0018] Figure 9 is an exploded view of one embodiment of the flow detection component in this application;

[0019] Figure 10 is a schematic diagram of the magnet section in Figure 2;

[0020] Figure 11 is a circuit diagram of another embodiment of the flow detection circuit in this application;

[0021] Figure 12 is a circuit diagram of another embodiment of the flow detection circuit in this application;

[0022] Figure 13 is a schematic diagram of another embodiment of the flow detection component in this application;

[0023] Figure 14 is a three-dimensional schematic diagram of the circuit board and the third housing in Figure 4.

[0024] Reference numerals: 100, First inlet; 200, First outlet; 300, First flow channel; 400, Flow detection component; 401, Connector; 500, First housing; 501, First receiving groove; 600, Second housing; 601, First opening; 602, Second receiving cavity; 700, Third housing; 701, First side; 702, Second side; 7011, First groove; 703, Second inlet channel; 704, Second outlet channel; 7021, Groove portion; 7022, Central shaft hole; 7023, Arc-shaped wall; 7024, Limiting portion; 1, External power supply terminal; 2, External signal terminal; 3, Control chip; 4, Hall element; 5, Capacitor auxiliary unit; 6, Diode; 7, First capacitor; 8, Second capacitor; 9, Impeller; 10, Circuit board; 11, Flow detection circuit; 31. Signal input terminal of the control chip; 32. Signal output terminal of the control chip; 33. Power supply terminal of the control chip; 34. Ground terminal of the control chip; 41. Positive terminal of the Hall element; 42. Negative terminal of the Hall element; 43. Signal output terminal of the Hall element; 61. Positive terminal of the diode; 62. Negative terminal of the diode; 91. Body part; 92. Magnet part; 93. First receiving cavity; 94. Limiting latching part; 101. Third side; 102. Fourth side. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this application clearer, the specific embodiments are further described below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit the scope of this application.

[0026] As shown in Figures 1-10 and 14, a water processor, which is a respirator or water softener, includes a first inlet, a first outlet, and a first flow channel. The two ends of the first flow channel are connected to the first inlet and the first outlet, respectively, and the first flow channel is also connected to the external atmosphere. The water processor further includes a flow detection component, which includes an impeller and a flow detection circuit 11. Part or all of the impeller is located in the first flow channel so that the fluid in the first flow channel can drive the impeller to rotate. The flow detection circuit 11 includes an external power supply terminal 1, an external signal terminal 2, a control chip 3, a Hall element 4, and a capacitor auxiliary unit 5. The signal output terminal 43 of the Hall element is connected to the signal input terminal 31 of the control chip, and the signal output terminal 32 of the control chip is connected to the external signal terminal 2. The two ends of the capacitor auxiliary unit 5 are connected to the external power supply terminal 1, an external signal terminal 2, a control chip 3, a Hall element 4, and a capacitor auxiliary unit 5. The positive terminal 41 and negative terminal 42 of the Hall element are connected. The positive terminal 41 of the Hall element and the power supply terminal 33 of the control chip are both connected to the external power supply terminal 1. The flow detection circuit 11 has a first working state and a second working state. In the first working state, the signal output terminal of the Hall element outputs a first signal to the signal input terminal of the control chip, and the signal output terminal of the control chip outputs a high level to the external signal terminal. The capacitor auxiliary unit supplies power to the Hall element and the control chip. Specifically, when the signal output terminal of the control chip outputs a high level to the external signal terminal, the external power supply terminal does not supply power to the Hall element and the control chip. Instead, the two ends of the capacitor auxiliary unit are connected to the positive and negative terminals of the Hall element, the power supply terminal of the control chip, and the ground terminal of the control chip, respectively, to replace the external power supply terminal in supplying power to the Hall element and the control chip.

[0027] In the second operating state, the signal output terminal of the Hall element outputs a second signal to the signal input terminal of the control chip, and the signal output terminal of the control chip outputs a low level to the external signal terminal. At this time, the capacitor auxiliary unit does not supply power to the Hall element and the control chip. The external power supply terminal replaces the capacitor auxiliary unit to supply power to the Hall element and the control chip, and simultaneously supplies power to the capacitor auxiliary unit to charge the capacitor auxiliary unit.

[0028] In this way, the use of Hall element 4 for detection can ensure reliability; the signal output terminal 43 of Hall element is connected to the signal input terminal 31 of control chip, and the signal output terminal 32 of control chip is connected to external signal terminal 2. Thus, the signal of Hall element 4 can be processed by control chip 3 and output in a specific form, thereby ensuring compatibility with external circuits; while the capacitor auxiliary unit 5 can ensure the power supply of Hall element 4, further improving the corresponding reliability.

[0029] The ground terminal 34 of the control chip is connected to the negative terminal 42 of the Hall element; the flow detection circuit 11 also includes a diode 6, the positive terminal 61 of the diode is connected to the ground terminal 34 of the control chip, and the negative terminal 62 of the diode is connected to the signal output terminal 32 of the control chip.

[0030] The positive terminal 41 of the Hall element and the power supply terminal 33 of the control chip are both connected to the external power supply terminal 1. That is, the positive terminal 41 of the Hall element is connected to the power supply terminal 33 of the control chip, while the ground terminal 34 of the control chip is connected to the negative terminal 42 of the Hall element. In this way, when the capacitor auxiliary unit 5 supplies power to the Hall element 4, it can also supply power to the control chip 3 at the same time. Since the negative terminal 62 of the diode is connected to the signal output terminal 32 of the control chip, and the positive terminal 61 of the diode is connected to the ground terminal 34 of the control chip, when the signal output terminal 32 of the control chip outputs a high level, the diode 6 can block the interference of the high level to the capacitor auxiliary unit 5, thereby ensuring that the capacitor auxiliary unit 5 can reliably supply power to the magnetic induction unit and the control chip 3.

[0031] The capacitor auxiliary unit 5 includes at least one first capacitor 7, the two ends of which are connected to the positive terminal 41 and the negative terminal 42 of the Hall element, respectively.

[0032] When there is no capacitor auxiliary unit 5 and the signal output terminal 32 of the control chip outputs a high level, the potential difference between the power supply terminal 33 and the ground terminal 34 of the control chip, as well as the potential difference between the positive terminal 41 and the negative terminal 42 of the Hall element, will decrease. This will cause the control chip 3 and the Hall element 4 to malfunction. However, by setting up the capacitor auxiliary unit 5, the first unit includes at least one first capacitor 7, which allows the first capacitor 7 to supply power to the control chip 3 and the Hall element 4 when the signal output terminal 32 of the control chip outputs a high level, thereby ensuring that the control chip 3 and the Hall element 4 can function normally.

[0033] In this embodiment, there is one first capacitor 7; in some embodiments, the number of first capacitors 7 may be greater than one, in which case multiple first capacitors 7 are connected in parallel.

[0034] External power supply terminal 1 is used to connect to an external power source, and external signal terminal 2 is used to connect to the signal terminal of an external circuit.

[0035] The flow detection component includes a circuit board 10, and a flow detection circuit 11 is arranged on the circuit board 10.

[0036] The impeller 9 has a body portion 91 and a magnet portion 92, which are separately disposed and fixed to the body portion 91. The impeller 9 rotates with the fluid and provides a changing magnetic field to the Hall element 4 during rotation. Specifically, the impeller 9 has a first position and a second position. In the first and second positions, the magnetic field strength of the magnetic field corresponding to the magnet portion 92 at the Hall element 4 is different. In some embodiments, the magnetic field polarity of the magnetic field corresponding to the magnet portion 92 at the Hall element 4 is different. For example, in the first position, the magnetic field corresponding to the magnet portion 92 at the Hall element 4 has the S pole polarity, and in the second position, the magnetic field corresponding to the magnet portion 92 at the Hall element 4 has the N pole polarity; or, in the first position, the magnetic field corresponding to the magnet portion 92 at the Hall element 4 has the N pole polarity, and in the second position, the magnetic field corresponding to the magnet portion 92 at the Hall element 4 has the S pole polarity. In this way, the impeller 9 can provide a changing magnetic field to the Hall element 4 during rotation, thereby facilitating the Hall element 4 to output different signals to calculate the corresponding flow rate.

[0037] In some embodiments, the body part 91 and the magnet part 92 may also be integrally provided.

[0038] The magnet part 92 is coaxially arranged with the body part 91, and the S pole and N pole of the magnet part 92 are arranged alternately along the circumferential direction of the magnet part 92.

[0039] The number of S poles and N poles in the magnet section 92 is the same, and the number of S poles and N poles can be one, or more or less two.

[0040] A first plane is defined, which is perpendicular to the axial direction of the impeller. Along the axial direction of the impeller, the projection of the magnet part onto the first plane intersects with the projection of the Hall element onto the first plane.

[0041] In this embodiment, the projection of the Hall element on the first plane is entirely located within the projection of the magnet portion on the first plane, that is, the projection of the Hall element on the first plane coincides entirely with the projection of the magnet portion on the first plane; in some embodiments, the projection of the Hall element on the first plane may also be partially located within the projection of the magnet portion on the first plane, that is, a portion of the projection of the Hall element on the first plane coincides with the projection of the magnet portion on the first plane.

[0042] This helps to shorten the distance between the Hall element 4 and the magnet part, thereby enabling the Hall element 4 to reliably detect changes in the magnetic field applied to it by the magnet part 92.

[0043] The body portion 91 has a first receiving cavity 93, and part or all of the magnet portion 92 is located in the first receiving cavity 93. The magnet portion 92 is fixedly connected to the body portion 91. Specifically, in this embodiment, the body portion 91 is provided with a limiting latching portion 94, which engages with the magnet portion 92 to limit and fix part or all of the magnet portion 92 in the first receiving cavity 93. In some embodiments, the magnet portion 92 is interference-fitted with the corresponding wall of the first receiving cavity 93 to fix the magnet portion 92 in the first receiving cavity 93. In this way, the body portion 91 is provided with a first receiving cavity 93 to accommodate the magnet portion 92, which can reduce the volume occupied by the impeller 9. In this embodiment, the first receiving cavity 93 can be in the form of a groove or a through hole.

[0044] The water processor includes a first housing 500 and a second housing 600, which are fixedly and sealed together. A first flow channel 300 is located between the first housing 500 and the second housing 600. The flow detection assembly 400 includes a third housing 700, which has a first side 701 and a second side 702 facing away from each other. The area between the first side 701 and the first housing 500 constitutes part of the first flow channel 300. An impeller is located on the first side 701, and a flow detection circuit 11 is located on the second side 702. The third housing 700 is sealed together with the first housing 500 and / or the second housing 600 so that the area corresponding to the second side 702 is not in communication with the area of ​​the first flow channel 300. In this embodiment, the outer periphery of the second side 702 of the third housing 700 is sealed to the second housing 600, thereby separating the second side 702 from the first side 701, so that the area corresponding to the second side 702 and the first flow channel 300 are not connected; in some embodiments, the third housing 700 may also be sealed to the first housing 500, and the third housing 700 may also be sealed to both the first housing 500 and the second housing 600, so that the area corresponding to the second side 702 and the first flow channel 300 are not connected.

[0045] In this way, the third housing 700 is sealed to the first housing 500 and / or the second housing 600, so that the area corresponding to the second side 702 and the first flow channel 300 is not connected, thereby ensuring that the fluid in the first flow channel 300 will not interfere with the flow detection circuit 11, thus ensuring the electrical safety of the flow detection circuit 11.

[0046] The second side 702 has a recessed portion 7021, and the circuit board 10 is limited in the recessed portion 7021. The second side 702 has a central shaft hole 7022, which is coaxially arranged with the impeller 9. The wall corresponding to the central shaft hole 7022 includes an arc-shaped wall 7023. The second side 702 also has a limiting portion 7024. The limiting portion 7024 and the arc-shaped wall 7023 are located on both sides of the circuit board 10, respectively. The limiting portion 7024 limits the circuit board 10, thereby preventing the circuit board from coming out of the recessed portion. The arc-shaped wall 7023 limits the circuit board 10, thereby restricting the circuit board from sliding in the recessed portion, thereby ensuring the relative positional relationship between the relevant components (such as Hall elements) and other components (such as magnets) on the circuit board.

[0047] A second plane is defined, the axis of the impeller 9 is contained within the second plane, and the second plane intersects with the limiting part 7024; the circuit board 10 has a third side 101 and a fourth side 102 opposite to each other. Relative to the fourth side 102, the arc-shaped wall 7023 is close to the third side 101. The Hall element 4 is located between the second plane and the fourth side 102. The Hall element 4, control chip 3, capacitor auxiliary unit 5, external power supply terminal 1, and external signal terminal 2 are all located on the same side of the second plane, and in the direction from the third side 101 towards the fourth side 102, the Hall element 4, control chip 3, and capacitor auxiliary unit 5 are arranged sequentially. This arrangement is beneficial for improving integration density, shortening the conductive path, and reducing the volume occupied by the circuit board.

[0048] The control chip 3 and the capacitor auxiliary unit 5 are farther away from the third side 101 than the Hall element 4; along the axial direction of the impeller 9, the projections of the control chip 3 and the capacitor auxiliary unit 5 onto the first plane do not intersect with the projection of the magnet part 92 onto the first plane. Thus, relative to the Hall element, the control chip and the capacitor auxiliary unit are farther away from the magnet part, thereby reducing the interference of the magnetic field of the magnet part on the control chip and the capacitor auxiliary unit, and improving the reliability of the operation of the control chip and the capacitor auxiliary unit.

[0049] The first side 701 has a first groove 7011, and part or all of the impeller is located in the first groove 7011;

[0050] The third housing 700 also has a second inlet channel 703 and a second outlet channel 704. The second inlet channel 703 is connected to the first groove 7011, and the second outlet channel 704 is connected to the first groove 7011. The second inlet channel 703 and the second outlet channel 704 constitute part of the first flow channel 300. Specifically, the second inlet channel 703 is connected to the first inlet 100, and the second outlet channel 704 is connected to the first outlet 200. The fluid entering from the first inlet 100 flows into the second inlet channel 703, then into the first groove 7011, thereby driving the impeller to rotate, and then flows out through the second outlet channel 704, and finally flows to the first outlet 200.

[0051] The centerline of the second inlet channel 703 is offset from the rotation axis of the impeller. This ensures that the fluid entering from the second inlet can reliably drive the impeller to rotate.

[0052] The first housing 500 has a first receiving groove 501, and part or all of the third housing 700 is located between the first housing 500 and the second housing 600, and the third housing 700 is limited to the first receiving groove 501; the first side 701 of the third housing 700 faces the bottom wall of the first receiving groove 501, and the second side 702 faces away from the bottom wall of the first receiving groove 501.

[0053] A second receiving cavity 602 is formed between the second side 702 and the second housing 600. The flow detection assembly 400 includes a circuit board, and the flow detection circuit 11 is arranged on the circuit board. Part or all of the circuit board is located in the second receiving cavity 602 to ensure that the control chip, Hall element, capacitor auxiliary unit and diode are located in the second receiving cavity 602. In this way, the second housing 600 can protect the circuit board and these electronic components.

[0054] The second housing 600 has a first opening 601, which is located on the surface of the second housing 600 and is connected to the second receiving cavity 602.

[0055] The flow detection component 400 includes a connector 401, which is fixed to a circuit board. Part or all of the connector 401 is located in a first opening 601. The connector 401 is used to fix external plug terminals so that the external plug terminals can maintain connection with external power supply terminals and external signal terminals.

[0056] Figure 11 shows another embodiment of the flow detection circuit 11. In this embodiment, the capacitor auxiliary unit 5 further includes at least one second capacitor 8, the capacitance of the second capacitor 8 being less than the capacitance of the first capacitor 7; the first capacitor 7 and the second capacitor 8 are connected in parallel.

[0057] In this way, the first capacitor 7 has a larger capacitance, thus it is responsible for more power supply. However, due to the larger capacitance of the first capacitor 7, it also has a larger parasitic inductance, which will lead to a slower response speed. The second capacitor 8 has a smaller capacitance. After connecting the second capacitor 8 in parallel with the first capacitor 7, the second capacitor 8 can compensate for the slower response speed, thereby ensuring the reliability of the circuit.

[0058] In this embodiment, there is one second capacitor 8; in some embodiments, there may be more than one second capacitor 8, in which case multiple second capacitors 8 are connected in parallel.

[0059] Figure 12 shows another embodiment of the flow detection circuit 11. In this embodiment, the capacitor auxiliary unit 5 includes at least two second capacitors 8. The two ends of each second capacitor 8 are connected to the positive terminal 41 and the negative terminal 42 of the Hall element, respectively. That is, the second capacitors 8 are arranged in parallel, and each second capacitor 8 is connected in parallel with the Hall element 4. In this way, multiple second capacitors 8 can avoid large parasitic inductance and ensure the corresponding response speed.

[0060] Figure 13 illustrates another embodiment of the flow detection assembly. In this embodiment, the magnet part 92 is not coaxially arranged with the body part 91. The magnet part 92 is located between the outer periphery of the body part 91 and the axis. Thus, when the impeller 9 rotates to the position corresponding to the magnet part 92 and the Hall element 4, the Hall element 4 can detect the magnetic field corresponding to the magnet part 92 and output a corresponding signal. In this embodiment, the number of magnet parts is greater than one, and the magnet parts are evenly arranged along the circumferential direction of the body part. This even arrangement of the magnet parts along the circumferential direction of the body part helps to ensure the smoothness of the impeller rotation. In some embodiments, the number of magnet parts can also be one, which helps to reduce costs.

[0061] The embodiments described above are merely examples of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various changes, modifications, substitutions, and variations without departing from the concept of this application, and these all fall within the protection scope of this application.

Claims

1. A water treatment device, which is an air breather or a water softener, characterized in that, The water processor includes a flow detection circuit (11), which includes an external power supply terminal (1), an external signal terminal (2), a control chip (3), a Hall element (4), and a capacitor auxiliary unit (5). The signal output terminal (43) of the Hall element is connected to the signal input terminal (31) of the control chip, and the signal output terminal (32) of the control chip is connected to the external signal terminal (2). The two ends of the capacitor auxiliary unit (5) are connected to the positive terminal (41) and the negative terminal (42) of the Hall element, respectively. The positive terminal (41) of the Hall element and the power supply terminal (33) of the control chip are both connected to the external power supply terminal (1). The flow detection circuit (11) has a first operating state and a second operating state. In the first working state, the signal output terminal (43) of the Hall element outputs a first signal to the signal input terminal (31) of the control chip, the signal output terminal (32) of the control chip outputs a high level to the external signal terminal (2), and the capacitor auxiliary unit (5) supplies power to the Hall element (4) and the control chip (3). In the second working state, the signal output terminal (43) of the Hall element outputs a second signal to the signal input terminal (31) of the control chip, the signal output terminal (32) of the control chip outputs a low level to the external signal terminal (2), and the external power supply terminal (1) supplies power to the Hall element (4) and the control chip (3).

2. The water conditioner of claim 1, wherein The ground terminal (34) of the control chip is connected to the negative terminal (42) of the Hall element; the flow detection circuit (11) also includes a diode (6), the positive terminal (61) of the diode is connected to the ground terminal (34) of the control chip, and the negative terminal (62) of the diode is connected to the signal output terminal (32) of the control chip.

3. The water conditioner of claim 1, wherein The capacitor auxiliary unit (5) includes at least one first capacitor (7), the two ends of which are connected to the positive terminal (41) and the negative terminal (42) of the Hall element, respectively.

4. The water conditioner of claim 3, wherein The capacitor auxiliary unit (5) further includes at least one second capacitor (8), the capacitance of the second capacitor (8) being less than the capacitance of the first capacitor (7); the first capacitor (7) and the second capacitor (8) are connected in parallel.

5. The water conditioner of claim 1, wherein The capacitor auxiliary unit (5) includes at least two second capacitors (8), and the two ends of each second capacitor (8) are respectively connected to the positive terminal (41) and the negative terminal (42) of the Hall element.

6. The water treatment device according to any one of claims 1 to 5, wherein The water processor includes a first inlet, a first outlet, and a first flow channel. The two ends of the first flow channel are respectively connected to the first inlet and the first outlet, and the first flow channel is also connected to the external atmosphere. The water processor includes a flow detection component, which includes an impeller and the flow detection circuit (11). At least a portion of the impeller is located in the first flow channel. The impeller (9) has a body part (91) and a magnet part (92). The body part (91) and the magnet part (92) are integrally or separately disposed. The impeller (9) is used to rotate with the fluid and provide a changing magnetic field to the Hall element (4) during the rotation. The impeller (9) has a first position and a second position during rotation. In the first position and the second position, the magnetic field corresponding to the magnet part (92) has different magnetic field strength or different polarity at the Hall element (4).

7. The water conditioner of claim 6 wherein, The magnet section (92) is coaxially arranged with the body section (91), and the S pole and N pole of the magnet section (92) are alternately arranged along the circumferential direction; or The magnet part (92) is not coaxial with the body part (91), and the magnet part (92) is located between the outer periphery of the body part (91) and the axis.

8. The water processor according to claim 7, characterized in that, The body part (91) has a first receiving cavity (93) and a limiting snap-fit ​​part (94). The limiting snap-fit ​​part (94) is limited to the magnet part (92). The magnet part (92) is at least partially limited in the first receiving cavity (93), or the magnet part (92) is in interference fit with the wall corresponding to the first receiving cavity (93).

9. The water conditioner of claim 6 wherein, A first plane is defined, which is perpendicular to the axial direction of the impeller; Along the axial direction of the impeller, the projection of the magnet portion onto the first plane intersects with the projection of the Hall element onto the first plane.

10. The water conditioner of claim 6 wherein, The water processor includes a first housing (500) and a second housing (600), the first housing (500) and the second housing (600) being fixedly connected; the first flow channel (300) is located between the first housing (500) and the second housing (600); The flow detection component (400) includes a third housing (700) having a first side (701) and a second side (702) disposed opposite to each other; The area between the first side (701) and the first housing (500) constitutes part of the first flow channel (300); The impeller is located on the first side (701), the flow detection circuit (11) is located on the second side (702), and the third housing (700) is sealed to the first housing (500) and / or the second housing (600) so that the area corresponding to the second side (702) and the first flow channel (300) is not in communication.

11. The water conditioner of claim 6, wherein, The flow detection assembly (400) includes a third housing (700) and a circuit board (10), the flow detection circuit (11) is disposed on the circuit board (10), the third housing (700) has a second side (702); the second side (702) has a recess (7021), and the circuit board (10) is confined in the recess (7021); The second side (702) has a central shaft hole (7022), which is coaxially arranged with the impeller (9); The wall corresponding to the central shaft hole (7022) includes an arc-shaped wall (7023), and the second side (702) also has a limiting part (7024). The limiting part (7024) and the arc-shaped wall (7023) are respectively located on both sides of the circuit board (10). The limiting part (7024) limits the circuit board (10), and the arc-shaped wall (7023) limits the circuit board (10). A second plane is defined, the axis of the impeller (9) is contained in the second plane, and the second plane intersects with the limiting part (7024); The circuit board (10) has a third side (101) and a fourth side (102) opposite to each other. The arc-shaped wall (7023) is close to the third side (101) relative to the fourth side (102). The Hall element (4) is located between the second plane and the fourth side (102). The Hall element (4), the control chip (3), the capacitor auxiliary unit (5), the external power supply terminal (1) and the external signal terminal (2) are all located on the same side of the second plane and are in the direction from the third side (101) toward the fourth side (102). The Hall element (4), the control chip (3) and the capacitor auxiliary unit (5) are arranged in sequence.

12. The water treatment device of claim 11, wherein, The control chip (3) and the capacitor auxiliary unit (5) are farther away from the third side (101) than the Hall element (4); A first plane is defined, which is perpendicular to the axial direction of the impeller (9); Along the axial direction of the impeller (9), the projections of the control chip (3) and the capacitor auxiliary unit (5) on the first plane do not intersect with the projection of the magnet part (92) on the first plane.

13. The water treatment device of claim 10, wherein, The first side (701) has a first groove (7011), and at least a portion of the impeller is located in the first groove (7011); The third housing (700) also has a second inlet channel (703) and a second outlet channel (704), the second inlet channel (703) communicating with the first groove (7011), and the second outlet channel (704) communicating with the first groove (7011); the second inlet channel (703) and the second outlet channel (704) constitute part of the first flow channel (300); The centerline of the second inlet channel (703) is offset from the rotational axis of the impeller; or The first housing (500) has a first receiving groove (501), at least a portion of the third housing (700) is located between the first housing (500) and the second housing (600), and the third housing (700) is confined within the first receiving groove (501), a first side (701) of the third housing (700) faces the bottom wall of the first receiving groove (501), and a second side (702) faces away from the bottom wall of the first receiving groove (501).

14. A water conditioner as claimed in claim 10 or claim 13, characterised in that A second receiving cavity (602) is formed between the second side (702) and the second housing (600). The flow detection assembly (400) includes a circuit board (10), and the flow detection circuit (11) is arranged on the circuit board (10). At least a portion of the circuit board (10) is located in the second receiving cavity (602).

15. The water treatment device of claim 14, wherein, The second housing (600) has a first opening (601) located on the surface of the second housing (600) and connected to the second receiving cavity (602); The flow detection component (400) includes a connector (401) fixed to the circuit board (10), at least a portion of which is located in the first opening (601). The connector (401) is used to fix external plug terminals so that the external plug terminals can remain connected to external power supply terminals and external signal terminals.

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